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⚡ Seal the deal with power and protection—liquid tape that never quits!
Gardner Bender LTB-400 is a 4 oz black liquid electrical tape designed for indoor and outdoor use. Its waterproof, rubber-based coating offers twice the dielectric protection (200 V/mil) compared to standard tapes, ensuring durable insulation that resists cracking and brittleness in extreme weather. Quick-drying in 10 minutes, it’s perfect for sealing cables, underground wiring, and security systems with a flexible, long-lasting finish.


| ASIN | B000FPAN2K |
| Adhesive Format | liquid |
| Adhesive Location | Wires and Cables |
| Adhesive Side Count | 1 |
| Best Sellers Rank | #45,514 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #113 in Insulating Tape |
| Brand | Gardner Bender |
| Brand Name | Gardner Bender |
| Color | Black |
| Colour | Black |
| Compatible Material | Copper |
| Configuration | configuration |
| Customer Reviews | 4.6 out of 5 stars 7,026 Reviews |
| Global Trade Identification Number | 00032076064037 |
| Included Components | Gardner Bender LTB-400 Liquid Electrical Tape, Easy-on, Waterproof, Indoor/Outdoor Use, 4 Oz. Jar, Black |
| Item Resistance | Some resistance |
| Item Type Name | Gardner Bender LTB-400 Liquid Electrical Tape, Easy-on, Waterproof, Indoor/Outdoor Use, 4 Oz. Jar, Black |
| Item Weight | 4 Ounces |
| Manufacturer | Gardner Bender |
| Material | Plastic |
| Material Type | Plastic |
| Model | LTB-400 |
| Number of Items | 1 |
| Other Special Features of the Product | Transparent |
| Package Size Name | 4 Oz Bottle |
| Part Number | LTB-400 |
| Recommended Uses For Product | Security |
| Recommended uses for product | Security |
| Size Name | 4 Oz Bottle |
| Smart Home Compatibility | Not Smart Home Compatible |
| Special features | Transparent |
| Surface Recommendation | Metal, Plastic |
| UPC | 032076064037 |
| Unit Count | 4 Milliliters |
| Upper Temperature Rating | 200 Degrees Fahrenheit |
| Water Resistance Level | Waterproof |
E**1
Fantastic product
Fantastic product. It holds extremely well without sliding off or leaking or dripping in any way even if you glob it on and it dries quite hard and durable. It stinks like crazy solvent as it should because it dries in like 10 minutes it's really wild this stuff is great. My waterproof phone had a big hole When I remembered that I had this. Now not anymore.
P**M
Ideal waterproofing coating for electrical cables
This product was used to seal a repair to an underground electrical to a telephone cable. It was easy to apply (3 coats, 1 day apart) and, so far, no problems after 2 months. Being bright red it was easy to see what parts had been treated.
E**A
Seca rápido
Buena calidad
A**N
Very effective for outdoor antenna work, and for color coding cables.
Always on hand in my ham shack and laboratory for the purposes in the title. Brushes on quickly and smoothly, dries to handle in a relatively short time, and completely weather ready overnight. No failures here in any Texas weather from desert heat to panhandle snow and ice to hurricanes at the coast. HIGHLY RECOMMENDED.
D**I
Works well
I'd heard of this in a few places and decided to try it with my latest project. I purchased both the Black and the Red for 12V applications. It is fairly odorous so use in a ventilated area. I applied liquid relatively thickly so that it was opaque and it takes a little while to dry. It dried to a fairly flexible coating to stranded copper wire, adheres to silicone, cable nicks, other wire insulation and solder joints well. So far the compound has remained in place and has not torn or begun to peel in a couple weeks. I cannot attest to being a water proof coating, how it would stand up in abrasive locations or longevity so use with common sense.
Trustpilot
1 month ago
2 weeks ago